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| Enabled for | Public preview | General availability |
|---|---|---|
| Admins, makers, marketers, or analysts, automatically | 
Feb 27, 2025 |
May 23, 2025 |
Business value
By customizing Microsoft 365 Copilot with custom engine copilots, you can add value to the solution. Create rich, organization-specific solutions that you can easily access and interact with from Microsoft Copilot. If you already have custom agents built with Copilot Studio, you can use that functionality in Microsoft 365 Copilot. Microsoft 365 Copilot is always available across the Microsoft 365 product suite, including office.microsoft.com, Teams, Word, Excel, and PowerPoint.
Feature details
You can extend Microsoft 365 Copilot with a custom agent by turning on the Microsoft 365 Copilot channel. Submit your custom agent to Teams or Microsoft 365. You can submit it to an admin for publishing in the line of business catalog, or you can deploy it just for yourself or to a small team by using a security group.
Microsoft 365 Copilot supports most common custom agent chat features. These features include messages, quick replies, adaptive cards with Action.Submit, multiturm interactions, and multimessage responses to a user interaction. Because it's a custom agent, it also benefits from Copilot Studio's rich usage analytics and governance provided by Power Platform Admin Center. Use your existing custom agent from Copilot Studio without any changes. Just add it to the Microsoft 365 channel.
Geographic areas
Visit the Explore Feature Geography report for Microsoft Azure areas where this feature is planned or available.
Language availability
Visit the Explore Feature Language report for information on this feature's availability.